How to become an inventor, by Aaron A. Warford 72892 [Subtitle: Containing experiments in photography, hydraulics, galvanism and electricity, magnetism, heat, and the wonders of the microscope] [Author: Aaron A. Warford] [Link: https://www.gutenberg.org/7/2/8/9/72892] [Files: 72892-0.txt; 72892-h.htm] Thanks to Demian Katz, Craig Kirkwood, and the Online Distributed Proofreading Team at https://www.pgdp.net (Images courtesy of the Digital Library@Villanova University.) Regards, Al